Fast-moving water can dissolve more substances than slow-moving water. The correct option is A.
When two materials dissolve, the resulting solution is a mixture of both. Even though it cannot be seen, the dissolved substance is still present in the solution.
Dissolving is demonstrated by stirring sugar into the water. The solute is sugar, and the solvent is water. Dissolving salt in water is an example of ionic compound dissolution.
Fast-moving water can dissolve more substances than slow-moving water.
Thus, the correct option is A.
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